FIX-LED-5.5 is a 5.5mm light emitting diode (LED). It is a very small, low power light-emitting device that is typically used for indicators and displays. It is usually yellow, green, red, or white in color, and can be driven by various DC or AC electrical currents. Some common applications for the FIX-LED-5.5 include general lighting, backlighting, interior vehicle and commercial building lighting, emergency lights, decorative lighting, and more.